Spatiotemporal Dynamics and Control of Strong Coupling in Plasmonic Nanocavities

Angela Demetriadou, Joachim M. Hamm, Yu Luo, John B. Pendry, Jeremy J. Baumberg, Ortwin Hess

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

In the light–matter strong coupling regime, the excited state of quantum emitters is inextricably linked to a photonic mode, leading to hybrid states that are part light and part matter. Recently, there has been a huge effort to realize strong coupling with nanoplasmonics, since it provides a versatile environment to study and control molecules in ambient conditions. Among the most promising designs are plasmonic nanocavities that confine light to unprecedentedly small volumes. Such nanocavities, though, support multiple types of modes, with different field profiles and radiative decay rates (bright and dark modes). Here, we show theoretically that the different nature of these modes leads to mode beating within the nanocavity and the Rabi oscillations, which alters the spatiotemporal dynamics of the hybrid system. By specifically designing the illumination setup, we decompose and control the dark and bright plasmon mode excitation and therefore their coupling with quantum emitters. Hence, this work opens new routes for dynamically dressing emitters, to tailor their hybrid states with external radiation.
Original languageEnglish
Pages (from-to)2410-2418
JournalACS Photonics
Volume4
Issue number10
Early online date2 Sep 2017
DOIs
Publication statusPublished - 18 Oct 2017

Keywords

  • dark nodes
  • nanoplasmonics
  • parity symmetry
  • plasmonic nanocavities
  • spatiotemporal dynamics
  • strong coupling

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